Myofibrils are __________. made of a series of sarcomeres proteins that cover active sites on actin bundles of muscle cells inside a whole muscle connections between actin and myosin

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Myofibrils are __________.
made of a series of sarcomeres
proteins that cover active sites on actin
bundles of muscle cells inside a whole muscle
connections between actin and myosin

 
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Malignant hyperthermia (MH) is a rare genetic disease in which the sarcoplasmic reticulum leaks calcium when the patient is put under general anesthesia. Which of the following best describes how anesthesia would affect the skeletal muscles of a patient with MH? 1. The muscles would contract because of calcium binding to troponin. 2. The muscles would contract because of increased nerve stimulation. 3. The muscles would relax because of calcium being pumped back into the sarcoplasmic reticulum. 4. The muscles would contract because of increased action potential generation in the sarcolemma.

/in /by

Malignant hyperthermia (MH) is a rare genetic disease in which the sarcoplasmic reticulum leaks calcium when the patient is put under general anesthesia. Which of the following best describes how anesthesia would affect the skeletal muscles of a patient with MH?
1. The muscles would contract because of calcium binding to troponin.
2. The muscles would contract because of increased nerve stimulation.
3. The muscles would relax because of calcium being pumped back into the sarcoplasmic reticulum.
4. The muscles would contract because of increased action potential generation in the sarcolemma.

 
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Which of the following phrases best describes how excitation is coupled to contraction in skeletal muscle fibers? through calcium release from the sarcoplasmic reticulum through T tubules through electrical impulses travelling along the sarcolemma through cross-bridge formation

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Which of the following phrases best describes how excitation is coupled to contraction in skeletal muscle fibers?
through calcium release from the sarcoplasmic reticulum
through T tubules
through electrical impulses travelling along the sarcolemma
through cross-bridge formation

 
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Which of the following causes the active site on actin to be exposed or uncovered? calcium entering the sarcoplasmic reticulum tropomyosin shifting position troponin releasing calcium cross-bridge formation

/in /by

Which of the following causes the active site on actin to be exposed or uncovered?
calcium entering the sarcoplasmic reticulum
tropomyosin shifting position
troponin releasing calcium
cross-bridge formation

 
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